Aluminum used to be more valuable than gold!
84
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
The brain case [of Neanderthals] on the average was more than 13 percent larger than that of the average of modern man
61
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57
Out of all the senses, smell is most closely linked to memory.
146
There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
13
One cubic foot of gold weighs more than 1,200 pounds!
78